Key to Australian Genera of Proceratiinae

1

• Upper plate of the second segment of the gaster (second gastral tergite) strongly arched so that it forms the rear-most part of the gaster when viewed from the side, the remaining segments being pushed forward underneath the first segment of the gaster (Fig. a) => 2
• Upper plate of the second segment of the gaster (second gastral tergite) only weakly arched and located in the middle of the gaster, the rear-most part of the gaster pointing rearward or directly down (Fig. aa) => Probolomyrmex

2

• Mandibles with only a single tooth at the tip (Fig. a). Clypeus extending forward so that it overhangs the rear part of the mandibles when they are closed (Fig. b). Antennae with 10 or fewer segments (including the scape) and with the last (apical) segment greatly enlarged and about as long as the remaining segments combined (excluding the scape) (Fig. c) => Discothyrea
• Mandibles with 3 or more teeth (Fig. aa). Clypeus not extending forward and with the rear part of the mandibles visible when they are closed (Fig. bb). Antennae with 12 segments (including the scape) and with the last (apical) segment moderately enlarged but distinctly shorter than the remaining segments combined (excluding the scape) (Fig. cc) => Proceratium